Accounts Payable and Accrued Expenses - Narrative (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)	Feb. 29, 2016 single_family_property	Dec. 31, 2015 USD ($)
Business Acquisition [Line Items]
Increase (decrease) in accounts payable and accrued expenses	$ 86,300
Accounts payable and accrued expenses	$ 241,067		$ 154,751
American Residential Properties Inc.
Business Acquisition [Line Items]
Number of properties acquired | single_family_property		8,936